Commit Graph

116 Commits

Author SHA1 Message Date
WeidiDeng
4de2c1c65e
panic when reading from backend failed to propagate stream error (#5952) 2023-11-23 03:18:18 -05:00
Matt Holt
3a3182fba3
reverseproxy: Add more debug logs (#5793)
* reverseproxy: Add more debug logs

This makes debug logging very noisy when reverse proxying, but I guess
that's the point.

This has shown to be useful in troubleshooting infrastructure issues.

* Update modules/caddyhttp/reverseproxy/streaming.go

Co-authored-by: Francis Lavoie <lavofr@gmail.com>

* Update modules/caddyhttp/reverseproxy/streaming.go

Co-authored-by: Francis Lavoie <lavofr@gmail.com>

* Add opt-in `trace_logs` option

* Rename to VerboseLogs

---------

Co-authored-by: Francis Lavoie <lavofr@gmail.com>
2023-10-11 13:36:20 -06:00
Francis Lavoie
2a6859a5e4
reverseproxy: Fix retries on "upstreams unavailable" error (#5841) 2023-10-10 22:07:20 +00:00
Patrick Koenig
4feac4d83c
reverseproxy: Allow fallthrough for response handlers without routes (#5780) 2023-10-05 23:15:26 -04:00
Matt Holt
936ee918ee
reverseproxy: Always return new upstreams (fix #5736) (#5752)
* reverseproxy: Always return new upstreams (fix #5736)

* Fix healthcheck logger race
2023-08-17 11:33:40 -06:00
Jacob Gadikian
d6f86cccf5
ci: use gci linter (#5708)
* use gofmput to format code

* use gci to format imports

* reconfigure gci

* linter autofixes

* rearrange imports a little

* export GOOS=windows golangci-lint run ./... --fix
2023-08-14 09:41:15 -06:00
Jacob Gadikian
b32f265eca
ci: Use gofumpt to format code (#5707) 2023-08-07 19:40:31 +00:00
Francis Lavoie
cd486c25d1
caddyhttp: Make use of http.ResponseController (#5654)
* caddyhttp: Make use of http.ResponseController

Also syncs the reverseproxy implementation with stdlib's which now uses ResponseController as well 2449bbb5e6

* Enable full-duplex for HTTP/1.1

* Appease linter

* Add warning for builds with Go 1.20, so it's less surprising to users

* Improved godoc for EnableFullDuplex, copied text from stdlib

* Only wrap in encode if not already wrapped
2023-08-02 20:03:26 +00:00
mmm444
da23501457
reverseproxy: Connection termination cleanup (#5663) 2023-08-01 14:01:12 +00:00
Marten Seemann
f45a6de20d
go.mod: Update quic-go to v0.37.0, bump to Go 1.20 minimum (#5644)
* update quic-go to v0.37.0

* Bump to Go 1.20

* Bump golangci-lint version, yml syntax consistency

* Use skip-pkg-cache workaround

* Workaround needed for both?

* Seeding weakrand is no longer necessary

---------

Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
Co-authored-by: Francis Lavoie <lavofr@gmail.com>
2023-07-21 22:00:48 -06:00
mmm444
424ae0f420
reverseproxy: Experimental streaming timeouts (#5567)
* reverseproxy: WIP streaming timeouts

* More verbose logging by using the child logger

* reverseproxy: Implement streaming timeouts

* reverseproxy: Refactor cleanup

* reverseproxy: Avoid **time.Timer

---------

Co-authored-by: Francis Lavoie <lavofr@gmail.com>
2023-06-19 15:54:43 -06:00
Corin Langosch
2ddb717144
reverseproxy: Fix parsing of source IP in case it's an ipv6 address (#5569) 2023-06-12 09:35:22 -06:00
Francis Lavoie
335cd2e8a4
reverseproxy: Fix active health check header canonicalization, refactor (#5446) 2023-05-05 15:19:22 -06:00
Francis Lavoie
4636109ce1
reverseproxy: Remove deprecated lookup_srv (#5396) 2023-04-10 20:08:40 +00:00
Corin Langosch
b6fe5d4b41
proxyprotocol: Add PROXY protocol support to reverse_proxy, add HTTP listener wrapper (#5424)
Co-authored-by: WeidiDeng <weidi_deng@icloud.com>
Co-authored-by: Francis Lavoie <lavofr@gmail.com>
2023-03-31 17:44:53 -04:00
Trea Hauet
2182270a2c
reverseproxy: Reset Content-Length to prevent FastCGI from hanging (#5435)
Fixes: https://github.com/caddyserver/caddy/issues/5420
2023-03-16 11:42:16 -06:00
Matt Holt
4b119a475f
reverseproxy: Don't buffer chunked requests (fix #5366) (#5367)
* reverseproxy: Don't buffer chunked requests (fix #5366)

Mostly reverts 845bc4d50b (#5289)

Adds warning for unsafe config.

Deprecates unsafe properties in favor of simpler, safer designed ones.

* Update modules/caddyhttp/reverseproxy/caddyfile.go

Co-authored-by: Y.Horie <u5.horie@gmail.com>

* Update modules/caddyhttp/reverseproxy/reverseproxy.go

Co-authored-by: Y.Horie <u5.horie@gmail.com>

* Update modules/caddyhttp/reverseproxy/reverseproxy.go

Co-authored-by: Y.Horie <u5.horie@gmail.com>

* Remove unused code

---------

Co-authored-by: Y.Horie <u5.horie@gmail.com>
2023-02-11 17:25:29 -07:00
Francis Lavoie
223cbe3d0b
caddyhttp: Add server-level trusted_proxies config (#5103) 2023-01-10 00:08:23 -05:00
Y.Horie
845bc4d50b
reverseproxy: Fix hanging for Transfer-Encoding: chunked (#5289)
* Fixes #5236
* enable request body buffering in reverse proxy
  when the request header has Transfer-Encoding: chunked
2023-01-09 00:13:34 -07:00
Matthew Holt
fcdbc69fab
Fix comment
I apparently read the diff backwards in
2a8c458ffe
2022-09-29 12:38:36 -06:00
Matthew Holt
2a8c458ffe
reverseproxy: Parse humanized byte size (fix #5095) 2022-09-29 12:37:06 -06:00
Matt Holt
e2991eb019
reverseproxy: On 103 don't delete own headers (#5091)
See #5074
2022-09-29 08:19:56 -06:00
Matthew Holt
e43b6d8178 core: Variadic Context.Logger(); soft deprecation
Ideally I'd just remove the parameter to caddy.Context.Logger(), but
this would break most Caddy plugins.

Instead, I'm making it variadic and marking it as partially deprecated.
In the future, I might completely remove the parameter once most
plugins have updated.
2022-09-16 16:55:36 -06:00
Matt Holt
66476d8c8f
reverseproxy: Close hijacked conns on reload/quit (#4895)
* reverseproxy: Close hijacked conns on reload/quit

We also send a Close control message to both ends of
WebSocket connections. I have tested this many times in
my dev environment with consistent success, although
the variety of scenarios was limited.

* Oops... actually call Close() this time

* CloseMessage --> closeMessage

Co-authored-by: Francis Lavoie <lavofr@gmail.com>

* Use httpguts, duh

* Use map instead of sync.Map

Co-authored-by: Francis Lavoie <lavofr@gmail.com>
2022-09-02 17:01:55 -06:00
Francis Lavoie
d4d8bbcfc6
events: Implement event system (#4912)
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
2022-08-31 15:01:30 -06:00
Matthew Holt
8cb3cf540c Minor cleanup, resolve a couple lint warnings 2022-08-29 12:31:56 -06:00
Abirdcfly
e1801fdb19
Remove duplicate words in comments (#4986) 2022-08-27 14:39:26 -06:00
Dávid Szabó
0c57facc67
reverseproxy: Add upstreams healthy metrics (#4935) 2022-08-27 12:30:23 -06:00
WilczyńskiT
c7772588bd
core: Change net.IP to netip.Addr; use netip.Prefix (#4966)
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
2022-08-17 16:10:57 -06:00
Matt Holt
f5dce84a70
reverseproxy: Ignore context cancel in stream mode (#4952) 2022-08-12 13:15:41 -06:00
Kévin Dunglas
085df25c7e
reverseproxy: Support 1xx status codes (HTTP early hints) (#4882) 2022-08-09 10:53:24 -06:00
Chirag Maheshwari
d26559316f
Replace strings.Index with strings.Cut (#4932) 2022-08-06 22:03:37 -06:00
Francis Lavoie
141872ed80
chore: Bump up to Go 1.19, minimum 1.18 (#4925) 2022-08-02 16:39:09 -04:00
Francis Lavoie
7d1f7771c9
reverseproxy: Implement retry count, alternative to try_duration (#4756)
* reverseproxy: Implement retry count, alternative to try_duration

* Add Caddyfile support for `retry_match`

* Refactor to deduplicate matcher parsing logic

* Fix lint
2022-07-13 14:15:00 -06:00
Matthew Holt
d6bc9e0b5c
reverseproxy: Err 503 if all upstreams unavailable 2022-07-08 13:01:32 -06:00
Francis Lavoie
98468af8b6
reverseproxy: Fix double headers in response handlers (#4847) 2022-06-22 15:10:14 -04:00
Matt Holt
5e729c1e85
reverseproxy: HTTP 504 for upstream timeouts (#4824)
Closes #4823
2022-06-03 14:13:47 -06:00
Francis Lavoie
f6900fcf53
reverseproxy: Support performing pre-check requests (#4739) 2022-05-06 10:50:26 -04:00
Francis Lavoie
3e3bb00265
reverseproxy: Add _ms placeholders for proxy durations (#4666)
* reverseproxy: Add `_ms` placeholders for proxy durations

* Add http.request.duration_ms

Also add comments, and change duration_sec to duration_ms

* Add response.duration_ms for consistency

* Add missing godoc comment

Co-authored-by: Matthew Holt <mholt@users.noreply.github.com>
2022-04-11 13:04:05 -06:00
Francis Lavoie
c7d6c4cbb9
reverseproxy: copy_response and copy_response_headers for handle_response routes (#4391)
* reverseproxy: New `copy_response` handler for `handle_response` routes

Followup to #4298 and #4388.

This adds a new `copy_response` handler which may only be used in `reverse_proxy`'s `handle_response` routes, which can be used to actually copy the proxy response downstream. 

Previously, if `handle_response` was used (with routes, not the status code mode), it was impossible to use the upstream's response body at all, because we would always close the body, expecting the routes to write a new body from scratch.

To implement this, I had to refactor `h.reverseProxy()` to move all the code that came after the `HandleResponse` loop into a new function. This new function `h.finalizeResponse()` takes care of preparing the response by removing extra headers, dealing with trailers, then copying the headers and body downstream.

Since basically what we want `copy_response` to do is invoke `h.finalizeResponse()` at a configurable point in time, we need to pass down the proxy handler, the response, and some other state via a new `req.WithContext(ctx)`. Wrapping a new context is pretty much the only way we have to jump a few layers in the HTTP middleware chain and let a handler pick up this information. Feels a bit dirty, but it works.

Also fixed a bug with the `http.reverse_proxy.upstream.duration` placeholder, it always had the same duration as `http.reverse_proxy.upstream.latency`, but the former was meant to be the time taken for the roundtrip _plus_ copying/writing the response.

* Delete the "Content-Length" header if we aren't copying

Fixes a bug where the Content-Length will mismatch the actual bytes written if we skipped copying the response, so we get a message like this when using curl:

```
curl: (18) transfer closed with 18 bytes remaining to read
```

To replicate:

```
{
	admin off
	debug
}

:8881 {
	reverse_proxy 127.0.0.1:8882 {
		@200 status 200
		handle_response @200 {
			header Foo bar
		}
	}
}

:8882 {
	header Content-Type application/json
	respond `{"hello": "world"}` 200
}
```

* Implement `copy_response_headers`, with include/exclude list support

* Apply suggestions from code review

Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
2022-03-09 11:00:51 -07:00
Matt Holt
ab0455922a
reverseproxy: Dynamic upstreams (with SRV and A/AAAA support) (#4470)
* reverseproxy: Begin refactor to enable dynamic upstreams

Streamed here: https://www.youtube.com/watch?v=hj7yzXb11jU

* Implement SRV and A/AAA upstream sources

Also get upstreams at every retry loop iteration instead of just once
before the loop. See #4442.

* Minor tweaks from review

* Limit size of upstreams caches

* Add doc notes deprecating LookupSRV

* Provision dynamic upstreams

Still WIP, preparing to preserve health checker functionality

* Rejigger health checks

Move active health check results into handler-specific Upstreams.

Improve documentation regarding health checks and upstreams.

* Deprecation notice

* Add Caddyfile support, use `caddy.Duration`

* Interface guards

* Implement custom resolvers, add resolvers to http transport Caddyfile

* SRV: fix Caddyfile `name` inline arg, remove proto condition

* Use pointer receiver

* Add debug logs

Co-authored-by: Francis Lavoie <lavofr@gmail.com>
2022-03-06 17:43:39 -07:00
Francis Lavoie
c50094fc9d
reverseproxy: Implement trusted proxies for X-Forwarded-* headers (#4507) 2022-03-06 18:51:55 -05:00
Francis Lavoie
f5e104944e
reverseproxy: Make shallow-ish clone of the request (#4551)
* reverseproxy: Make shallow-ish clone of the request

* Refactor request cloning into separate function

Co-authored-by: Matthew Holt <mholt@users.noreply.github.com>
2022-03-03 09:54:45 -07:00
Денис Телюх
2e46c2ac1d
admin, reverseproxy: Stop timers if canceled to avoid goroutine leak (#4482) 2022-01-04 12:14:18 -07:00
Francis Lavoie
5bf0adad87
caddyhttp: Make logging of credential headers opt-in (#4438) 2021-12-02 13:26:24 -07:00
Francis Lavoie
9ee68c1bd5
reverseproxy: Adjust defaults, document defaults (#4436)
* reverseproxy: Adjust defaults, document defaults

Related to some of the issues in https://github.com/caddyserver/caddy/issues/4245, a complaint about the proxy transport defaults not being properly documented in https://caddy.community/t/default-values-for-directives/14254/6.

- Dug into the stdlib to find the actual defaults for some of the timeouts and buffer limits, documenting them in godoc so the JSON docs get them next release.

- Moved the keep-alive and dial-timeout defaults from `reverseproxy.go` to `httptransport.go`. It doesn't make sense to set defaults in the proxy, because then any time the transport is configured with non-defaults, the keep-alive and dial-timeout defaults are lost!

- Sped up the dial timeout from 10s to 3s, in practice it rarely makes sense to wait a whole 10s for dialing. A shorter timeout helps a lot with the load balancer retries, so using something lower helps with user experience.

* reverseproxy: Make keepalive interval configurable via Caddyfile

* fastcgi: DialTimeout default for fastcgi transport too
2021-11-24 01:32:25 -05:00
Francis Lavoie
f73f55dba7
reverseproxy: Sanitize scheme and host on incoming requests (#4237)
* caddyhttp: Sanitize scheme and host on incoming requests

* reverseproxy: Sanitize the URL scheme and host before proxying

* Apply suggestions from code review

Co-authored-by: Matt Holt <mholt@users.noreply.github.com>

Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
2021-10-26 14:41:28 -06:00
Francis Lavoie
b092061591
reverseproxy: Prevent copying the response if a response handler ran (#4388) 2021-10-18 14:00:43 -04:00
Matthew Holt
059fc32f00
Revert 3336faf2 (close #4360)
Debug log is correct level for this
2021-09-27 12:06:06 -06:00
Matthew Holt
3336faf254
reverseproxy: Log error at error level (fix #4360) 2021-09-24 18:29:23 -06:00